https://adventofcode.com/2024

This year's goal is to gain familiarity with the Roc programming language.

export COOKIE=session=53616c7...
just part1

This command will automatically create a README.md with the prompt(s). The challenge input will be saved to input.txt.

This command communicates with the Advent of Code servers to fetch this data. The given day must be live before the folder will be able to be templated. The download also requires your session cookie to fetch your personalized data.

This cookie is fairly long lived and can be extracted from the Cookie header for any request to adventofcode.com after you are logged in. Then set the environment variable with this session value.

Most of the just commands accept the day number as the first argument. This only needs to be specified if the command is not run on the same day as the challenge.

Example for day 5, part 1:

cd day05
roc p1.roc -- input.txt

When ready to submit an answer use just answer. Continue to part 2 using just part2 to update the day's README with the extended prompt.

just answer $(roc p1.roc -- input.txt)
just part2

• Roc version:

roc nightly pre-release, built from commit d72da8e on Fr 29 Nov 2024 09:11:57 UTC

• just
• curl
• pup
• GNU sed
• pandoc